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Thread: GB Crossmember Converted to Bolt-on

  1. #1
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    GB Crossmember Converted to Bolt-on

    Following a harrowing experience mating a Holden 186 to a Landy GB on the garage floor, I decided I want to avoid doing it in-situ. I reckon you would need the patience of Job & the Queen Mother of all G-clamps to accomplish the connection in the vehicle,

    There was no way the eng and GB can go out-in together with the 3rd x-member in place so I cut it out.

    I got a nasty surprise when it came off: rust had formed on the underside of the chassis

    It was welded on on only 2 sides so water seeped in. Horrible welding job to fix it-on my back with slag dropping on me!

    The GB mountings had to come off to get at one of the welds.

    I welded the two lugs on because I was going to bolt thru the big chassis rail. That shows how much LR experience I have. Fuel tanks?? DERRR!!

    Any way, it wouldn't have worked without a solid tube inside the rail to stop the sides deforming when the bolts were done up.

    So I elected to go inside the rails and place a 150mm length of 50mm angle iron along the bottom with 2 nuts welded on the receive 2 bolts coming up thru the x-member.

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  2. #2
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    Looking at the "panel" that came out, I saw the chassis was double thickness where I needed to cut. There was no way to be sure the re-fixing weld would penetrate to the 2nd layer so I plug welded some leftover angle to the inside & connected it up with a few plug welds further foward when it went back in.


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  3. #3
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    The stitch up went OK & included the plug welds further forward of thge patch to connect up the reinforcing anlge iron.

    Overall? Yeah a damn lot of work! But then things ALWAYS look simpler before you get into them, don't they!!

    But hey! If I have to take out the engine or GB I will be smiling ear to ear!!

    Yes! I know I have blocked the drain holes. I have drilled other ones.


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  4. #4
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    Standard thing in the UK was to replace the X member with a military bolt on version. Just needed to weld the fittings onto the chassis.

    HTH

    Ivan

  5. #5
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    The fc got a removable cross member came in handy, when we removed the gear box, I cleaned it up before it was refitted.

  6. #6
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    Oh golly gosh! Did I just "re-invent the wheel"? That's the price of lack of knowledge I suppose!

    Surely by attaching a bracket the GB hangs a bit lower? Was I a bit anal to make sure the x-member went back exactly where it was?

    I'm guessing the military use inverted saddles (with a pair of caged nuts) simply welded onto the flanks? With holes drilled to allow the caged nuts to go into the chassis cavity?

    It would have been a damn sight easier than all that cutting & shutting & then going deaf using an angle grinder.
    Last edited by geodon; 26th March 2012 at 09:42 AM. Reason: typo

  7. #7
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    Must me still on the parts list? As a new part.

  8. #8
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    Here's some examples of what the Army did:
    Details Mods LAND-ROVER -REMLR

  9. #9
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    Hell!

    I wish I had posted a "how to" question first!

    KORG that IS how to do it.

    The original x-member could be used but you would have to take up the gap between the rim & the narrower part of the top-hat section: a few flat washers tacked together.

    I love the thru-bolts to attach it! No frigging around lining up threads. I had to taper the ends of the mounting bolts then clean them up with a die.

    I could play the "Originality Card" but it's a bit hard with that orange example of Detroit's finest hanging on the GB!

  10. #10
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    Quote Originally Posted by geodon View Post
    Hell!

    I wish I had posted a "how to" question first!

    KORG that IS how to do it.

    The original x-member could be used but you would have to take up the gap between the rim & the narrower part of the top-hat section: a few flat washers tacked together.

    I love the thru-bolts to attach it! No frigging around lining up threads. I had to taper the ends of the mounting bolts then clean them up with a die.

    I could play the "Originality Card" but it's a bit hard with that orange example of Detroit's finest hanging on the GB!
    You still did good, mate.

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